Mark pushed outwardly with his hands in a cross-like motion against the two fleshy walls that imprisoned him, trying desperately to create some space for himself. Briefly, some light flooded in. He could see the shadow of the two great curves that threatened to collapse back upon him, extending out and away from his current position in impossible geometric arcs. They dwarfed his entire being. He knew those curves well - for they were in his mind often. They belonged to his mother Sarah's big, plump butt. How did he get here? How was this possible?
For his efforts, one of his hands slipped against the ever present slickness of his humid prison, and as a result he became unbalanced - his face slamming into the plump flesh at his side. As he opened his mouth to groan involuntarily, a pungent and salty film of liquid flooded his senses as his tongue dragged across skin - the skin of his own mother's ass crack. The wobbly cheeks that held him seemed huge... impossibly huge. Was she big, or he small? Did she know he was there, or... did she put him there? As Mark struggled to make sense of his predicament, the unrelenting combination of sweat, heat, pressure, and an intense musky aroma began to overwhelm his senses. He began to panic, twisting and turning his whole body wildly in the confines of his Mom's butt. A bad idea. He stretched out his arms and tried to hang in place, but felt his body begin to slip against the sweaty skin. The remaining sliver of light faded from his vision as those two great curves began to close in around him, and the heat of his confines increased dramatically.
He could sense the deepest part of her ass like a sweltering presence below him - getting closer by the second as he slipped and squelched downwards, all the while being squeezed by the impossibly huge butt of his own mom. He could feel her heartbeat drumming in his ears, and the feeling of his entire body slowly sliding through the interior of her hot, slick ass cheeks sent him into sensory overload.
As he lay trapped - spread-eagle and entirely engulfed by his mom's enormous sweaty butt - his cock began to throb and spasm. Then Mark sensed the odd sensation of Sarah shifting her big, beautiful body beneath him. If he had to guess, she might be lying on her stomach - her ass to the sky. In addition to the gradual slide into the depths of his mom's steamy ass crack, Mark felt another motion emerge - a rhythmic rocking and squirming. And then she spoke - her voice coming from all around him - muffled but loud, warm and motherly - but with a tone of urgency too. There was a huskiness to her voice.
"Good boy honey. Go deeper. Mommy is so close now".
The shifting and squirming increased. Mark's member throbbed painfully. He could hear his mom's moaning now emanating through the fleshy confines of her ass cheeks which pinned him on all sides - she wasn't holding back now. The intensity of the heat, smell, and taste his mom's ass compounded for Mark as he fully became present within this moment. With a sudden surge of animalistic lust, he thrust one hand down to grab hold of his engorged cock - stroking with abandon, and began licking and sucking on the sensitive inner skin of his Mom's ass flesh. As he got deeper, the musky taste of her ass tripled in intensity on his tongue. Suddenly her gluteal muscles tightened around him - and he became squeezed - even crushed - tightly up against the most intimate confines of his big, beautiful mother as she cried out in ecstasy...
___________
Sarah awoke with a jolt amongst the wild tangle of her bed sheets- chest heaving, hair a mess, coated in sweat, and knees pressed tightly together. She groaned and rolled onto her stomach, her big beautiful ass wobbling to a halt as her cheeks came to rest pointing upwards towards the ceiling. She closed her eyes in effort to recall the last images of her fleeting dream, and snaked one hand past the soft curves of her breasts and belly towards the inferno that burned between her thighs. Given the soaked state of her panties (which were this morning a baby blue seamless thong) Sarah knew even before the first electrifying stroke of her finger that her pussy was wet as she had ever known it. "What the fuck was that..." she whispered lustily to herself, as the conjured images from her dream flashed across her mind. The dream of her son Mark - as tiny as a mouse - sliding deep into the most intimate recesses of her own big meaty ass. "Fuck." She moaned.
Her delicate fingers traced across her moist outer pussy lips, dipping in for a moment to acquire some satisfyingly abundant self lubrication, and then slid towards her clit and began to move in a gentle, circular motion - adding pressure as she began to find her rhythm. Her other hand moved to her lower back and then slid down slowly to cup and squeeze one of her meaty ass cheeks. Goosebumps rippled across the skin of her butt and thighs as she pulled her cheeks apart lewdly and felt cool fresh air rush into the crevice of her ass. Then she released her cheeks back together with a satisfying slap of flesh on flesh, and slid her fingers into the sweaty depths between her cheeks - to the forbidden space where Mark had just been in her taboo dream.
And then as the intensity of her masturbation began to increase, Sarah did something uncharacteristic. Something she hadn't really done since her college days. She probed lightly at her sweltering thong-covered asshole - which was sticky with sweat, residual pussy juice, and whatever else she had expelled in the night - and then gently she began to move a finger in a rhythmic motion - applying pressure as she went. It only felt foreign for a flicker of a moment, before she began to synchronize with the attention she was already giving her clit.
Sarah hadn't experimented with ass play in a long time - not since her exchange student boyfriend in college Stavros introduced her to it. He had a more... European.. sensibility towards sex than the American boys she had hooked up with to date; he used to spend what felt like hours just massaging oil into her body in the evenings they shared in her dorm. He had a particular fixation on her ass - he was gentle, but strong and attentive, and he used to passionately kiss, lick, and suck on every square millimeter of her body, before bouncing her up and down on his cock late into the evenings. She remembered the electric feeling of anticipation with his breath on her pussy, taint, and asshole, as he would spread her oiled ass cheeks apart - his lips mere inches away from her most intimate holes - ready to worship her...
